A deathbed conversion is the adoption of a particular religious faith shortly before dying. Making a conversion on one's may reflect an immediate change of belief, a desire to formalize longer-term beliefs, or a desire to complete a process of conversion already underway. Claims of the deathbed conversion of famous or influential figures are commonly used as rhetorical devices, but are rarely verifiable.
Conversions at the point of death have a long history. The first recorded deathbed conversion appears in the Gospel of Luke where the good thief, crucified beside Jesus, expresses belief in Christ. Jesus accepts his conversion, saying “Today you shall be with Me in Paradise".
Perhaps the most momentous conversion in Western history was that of Constantine I, Roman Emperor and later proclaimed a Christian Saint by the Eastern Orthodox Church. While his belief in Christianity occurred long before his death, it was only on his deathbed that he was baptised, in 337. While traditional sources disagree as to why this happened so late, modern historiography concludes that Constantine chose religious tolerance as an instrument to bolster his reign.
Charles II of England reigned in a Protestant nation at a time of strong religious conflict. Though his sympathies were at least somewhat with the Catholic faith, he ruled as an Anglican, though he repeatedly attempted to lessen the persecution and legal penalties affecting non-Anglicans in England. As he lay dying following a stroke, released of the political need, he was received into the Catholic Church.
The most famous French fabulist published a revised edition of his greatest work, Contes, in 1692, the same year that he began to suffer a severe illness. Under such circumstances, Jean de La Fontaine turned to religion. A young priest, M. Poucet, tried to persuade him about the impropriety of the Contes, and it is said that the destruction of a new play of some merit was demanded and submitted to as a proof of repentance. La Fontaine received the Viaticum, and the following years, he continued to write poems and fables. He died in 1695.